Gang-edger



(No Model.) 7

S. S. VAIL 8: J. SOLLIDAY.

GANG BDGER.

No. 334,997. Patented Jan 26, 1886.

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flttorney UNITED; STATES PATENT OFFICE..-

SAMUEL S. VAlL AND JAMES SOLLTDAY, OF ST. LOUIS, MISSOURI.

GANG-EDGER.

. SPECIFICATION forming part of Letters Patent No. 334,997,6ated January26. 1886.

Application filed November 17, 1884. Serial No. 148,180. (No model.)

To aZZ whom it may concern Be it known that we, SAMUEL S. VAIL and JAMES SOLLIDAY, citizens of the United States, residing at the city ofSt. Louis, in the State of Missouri, have invented certain new anduseful Improvements in Gang-Saw Edgers, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to animproved gangedge sawing-machine for sawingthe edges of boards and for splitting them to desired widths.

The invention consists in a special system of parts comprising severalimproved features relating to the arrangement of the saw mandrel and ofthe feed-pressure rolls, which are made and used substantially as setforth hereinafter, and as shown in the accompanying drawings, in whichFigure 1 is a perspective View, and Figs. 2, 3, and 4 are details ofparts.

The object of the invention is to provide the machine withapracticablesystem of pressure-rolls to hold the material being sawed,having a nearly vertical movement, which can be lifted by the operatorfrom his position at the end of the apparatus, so as to take in boards,and which can be set to hold the rolls at any adj ustable point, whilefree to rise above but not to sink below the same, and to adjust andarrange the parts to enable this to be done, and to make the machinewith the same simple, compact, cheap, and desirable. The system of partsforthis purpose which require improvement to adapt them thereforconsists in the pressure rolls held in pivoted hanger-frames with alifting-stirrup frame and a lifting-shaft and. chain and hand-wheel, andin the sawmandrel and its associated parts, made and arranged so that itmay be taken out endwise conveniently for the sharpening, &c., of itssaws, notwithsanding the obstruction caused by the pressure-roll hangersbeing pivoted over the mandrel.

In making the changes from the apparatus in ordinary use, which we havedevised for this purpose, we have approached in some featuresconstructions previously devised, none of which, however, would servethe purposes we have had in view, and we havebeen compelled to devisethe system as a whole, with all its parts and features mutually adaptedto each other and to our purpose.

The machine has a general frame, A, which bears the several operatingparts. The bed B has rollers O 0, arranged for the passageot' boardsthrough the machine, saws D D D for cutting the boards, and rolls F Fand G G for feeding and holding the boards.

The saws are circular, and are mounted on a mandrel, H, adjustably, sothat any desired number of saws may be used, and so that they may be setany distances apart which may be required.

The saw-mandrel H is made with journalbearings of different sizes on itstwo ends. The journal H at the driving end is made the full size of themandrel, so that it may be drawn out without removing bearing-boxes. Themandrel H bears a driving-pulley, I, on its end without an outerjournal-bearing, which has its hub set to one side of its center, andhas the box of the mandrel journal-bearing projected within it at theother side, so that the strain of the belt on the pulley will havelittle leverage beyond the box on the mandrel to press the lubricant outand cause friction. The mandrel H has keyway h cut in it between itsjournals for use in hold ing the saws, and. the outer journal, H, ismade smaller than the mandrel, so as to let the projections or keys onthe saw-holder collars pass into the slots h without cutting into thejournal-surface. The end of mandrel H, beyond journal H, is made with ashoulder and of smaller size to receive a collar outside to hold it,which bears a pulley arranged to drive the feed-roller belt. Thesepeculiarities relating to the saw-mandrel, while desirable for otherreasons, are required by the peculiar arrangement of the pressure-rollsand their hanger pivot-frames, which prevent the mandrel and. its sawsbeing taken off by upward removal, and the endwise'removal makes itimpracticable to have an additional j ournalbearing outside of thedriving-pulley, which renders the overhung pulley necessary to give it afirm support against its belt.

The feed-rolls F F are set on opposite sides of the saws, and havepressure-rolls G G mounted over them in frames K K, so as to be movableup and down to take and press upon the boards being sawed.

The frames K K are held by pivots at k k to brackets L L, which are atthe sides nearly together in line with the center of the tops of thesaws, above the level of the board-bed, so that the rolls G G may riseand fall nearly vertically to take and bear on the boards to be sawed.

Upright bars or rods mm are pivoted to the ends of framesKK and extenddown to'crossbars M M, with which they form stirrupframes to control therolls.

Ashaft, P, is mounted lengthwise under bed B, over cross-bars M M, andhas a hand-wheel, R, on its end, within reach of the workman Whooperates the machine. This shaft has chains S S, which connect from itto the crossbars M M, so that by turning the shaft the chains may bewound upon it and raise the stirrup-frames, and by them raise the rollsG G, so as to enable a board of any thickness to be caught by thefeed-rolls under them, and so that, by turning the other Way to anydegree after the boards are caught,the rolls G G will. be let down onthem and hold them down on the feed-rolls.

The shaft 1? has a pawl-and-ratchet dog or holder, T, arranged to holdit at any position so that the rolls G G may descend to any desiredpoint and rise above it by riding on the boards, but cannot drop belowit when the boards have passed through, so as to keep the rolls upsufficiently to take the next board. This is adjustable to suitdifferent thicknesses of boards, and a foot trip-lever, U, projectsdown, by which the dog may be thrown out by the foot.

The several parts are suitably made, ar- 40 ranged, and adjusted, andvarious modifications can be made and used.

We claim 1. An improved sawing-machine having an endwise-removablesaw-mandrel and press- 5 ure-rolls, with hanger-frames pivoted nearlyover the mandrel, and provided with stirrupframes and shaft and chainunder the sawing apparatus, for operating them, substantially as setforth.

2. The presser-roll of a sawing-machine, combined with a Windlass-shaft,1?, extending from the feeders position under the sawingbed, andprovided with a chain or means of lifting, S, connecting with cross-headM, having uprights m at the sides, to lift or hold up the presser-rollto admit material to be sawed.

3. The Windlass-shaft P,under the bed of a sawing-machine, combined witha ratchet or other means for holding said shaft from rotating, and witha vertically-movable pre'sserroll, connected through bars m, cross-headM, and chains S, to hold the roll up to an adj ustable position, as setforth.

In testimony whereof we affix our signatures 65 in the presence of twowitnesses.

SAML. S. VAIL. JAMES SOLLIDAY.

"Witnesses:

DANL. OLEARY, F. P. BARTLETT.

